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SN2的意思
1、二价锡离子；二价锡；二种继发肿瘤；二双分子亲核取代反应
SN2的双语例句
1、Study of the quantum chemistry model of sn2 'and Se 2' reaction transition states
S N2′和S E2′反应过渡态的量子化学模型探讨
2、Sn2-plays the role of sensitizer in silvering reaction.
在镀银反应中，Sn~（2-）起着敏化剂的作用。
3、Antioxidant can effectively prevent Sn2+ in the bath from being oxidated;
抗氧化剂能有效地防止镀液中Sn~（2+）的氧化；
4、In my thesis the anion and ion-pair SN2 reactions at carbonhave been studied.
本论文主要研究了碳原子上阴离子和离子对的SN2反应。
5、The underpotential deposition ( UPD) of Sn2+ on gold disc electrode was studied using cyclic voltammetry.
用循环伏安法研究了Sn2+在金盘电极上的欠电位沉积。
6、The results indicate that most Sn2+ permeate into the pore canal of bamboo charcoal by restoring to the original state Sn.
结果表明：Sn2+大部分进入到竹炭的孔道中，并且被还原为单质Sn。
7、With the deformation of the Ag matrix, Sn2 particles can insert continuously into the Ag matrix and finally accomplish the homogenous dispersion.
随着Ag基体的变形，SnoZ颗粒会不断的嵌入到银基体中，最终完成均匀弥散。
8、Meanwhile the doping amount of TiO2/ Sn2+, the initial concentration of illumination time have important effect on the degradation of formaldehyde which were determined.
讨论了TiO2/Sn2+的掺杂量、甲醛的初始浓度、光照时间等因素对涂料降解甲醛效率影响。
9、When Sn2+ concentration in the bath is higher, the dispersive ability of the bath decreases and the surface quality of the deposits sets worse.
Sn~（2+）浓度过高，镀液分散能力降低，使镀层的表面质量下降。
10、Al3+, Mg2+, Sn2+, sugar, NaCl and sodium benzoate have hyperchromic effects.
而Al3+、Mg2+、Sn2+离子，蔗糖，食盐和苯甲酸钠则有不同的增色作用。
11、The stability of colloidal pd2+ and Sn2+ activation solution mainly depends on the concentration of pd2+ and Sn2+.
实验中发现胶体钯活化液的稳定性主要取决于Pd2+和Sn2+的浓度。
12、Studies on the SN2 reaction of the side chain group in the polymer-syntheses of ethyl α-methylacrylate asymmetric resins containing chiral α-amino acid ligands
聚合物侧基的双分子亲核取代反应&含α-氨基酸手性配体的丙烯酸酯类不对称配位树脂的合成
13、Can generate is relatively stable carbon-left groups and the response of vulnerable SN1, central carbon atom space hampered the response of small-prone SN2.
能生成相对稳定的正碳离子和离去基团的反应物容易发生SN1，中心碳原子空间阻碍小的反应物容易发生SN2。
14、The addition of metal ions to the catalytic system improved the activity and selectivity in different degree ( except Sn2+ selective reduction of m-CAN), The different metal ions have different effects.
结果表明，这4种金属离子不同程度的提高了PVP-4Pt/1Ru胶体的活性和选择性（除Sn2+对m-CAN选择性降低外），不同的金属离子对PVP-4Pt/1Ru胶体的修饰作用不同。
15、The BST films with 15mol% Sn2+ dielectric constant was 420, which was higer than that non-doped BST thin films.
以Sn~（2+）为掺杂源，其最佳掺杂量为15%mol，在此掺杂量下，BST薄膜的介电常数为420，高于未掺杂薄膜，介电损耗为0.1。
16、A new highly convenient route for the core trisaccharide of N-glycans construction was found by the SN2 inversion method. And it is the most convenient route which has been reported until now.
最后通过分子内SN2亲核反应法找到了一条高效构建N-糖链核心三糖的新路线，这也是迄今已报道的最简洁高效的路线。
17、Magnetic field also did not influence the following cathodic processes: O2 diffusion, Sn2+ reduction, Sn2+ diffusion and H+ reduction on Sn-plated surface, but influenced H+ reduction on iron.
磁场也不影响阴极过程中O2扩散，Sn~（2+）还原、Sn~（2+）扩散、镀Sn层上氢还原等反应，但会影响Fe上氢还原反应。
18、The mechanisms of the hydrolysis were proposed to be unimolecular nucleophilic substitution and bimolecular nucleophilic substitution ( SN2). On the problem of Bimolecular Nucleophilic Substitution Reaction Sterochemistry
水解反应的可能机理是S Nl和S N2.双分子亲核取代反应立体化学问题释疑
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